Pressure cooker having bayonet mount and related manufacturing method

Abstract

The invention relates to a food pressure cooking appliance including a bowl and a lid intended to be locked relative to the bowl to form with the latter a cooking chamber adapted to rise in pressure. The appliance also including bayonet locking means forming first and second series of protrusions that are integral with the envelope of the lid and the envelope of the bowl, respectively, and that are intended to cooperate with each other to ensure the locking of the lid relative to the bowl. Each protrusion of at least one of said series is consisted by a volume element that has opposite convex and concave faces, and that is formed by a localized radial deformation of the corresponding envelope.

Description

TECHNICAL AREA[0001]The present invention relates to the general technical field of food pressure cooking appliances, and in particular the household appliances of the pressure cooker type intended to form a cooking chamber able to rise in pressure in order to ensure the steam-pressure cooking of food contained therein.[0002]The present invention more particularly relates to a food pressure cooking appliance including at least a bowl and a lid intended to be locked relative to the bowl to form with the latter a cooking chamber adapted to rise in pressure, as well as bayonet locking means forming first and second series of protrusions that are integral with the envelope of the lid and the envelope of the bowl, respectively, and that are intended to cooperate with each other to ensure the locking of the lid.[0003]The present invention also relates to a method of manufacturing a food pressure cooking appliance including at least a bowl and a lid intended to be locked relative to the bo...

AI Technical Summary

Benefits of technology

[0012]The invention hence proposes to remedy the different drawbacks exposed hereinabove and to propose a new pressure cooking appliance whose locking means is particularly efficient, in particular from the resistance to deformation point of view, while being light in weight, safe, easy to handle and having good properties of affordance as well as an improved aesthetics.

[0013]Another object of the invention aims to propose a new pressure cooking appliance provided with locking means that may be manufactured in a simple manner and at a lesser cost, while being particularly robust and reliable.

[0016]Another object of the invention aims to propose a new pressure cooking appliance whose design facilitates the suitable positioning of the lid relative to the bowl.

[0017]Another object of the invention aims to propose a new pressure cooking appliance whose design allows the user to easily and intuitively make sure of the correct locking of the lid relative to the bowl.

[0018]Another object of the invention aims to propose a new method of manufacturing a pressure cooking appliance that is based on particular simple and economic steps, while making it possible to obtain a cooking appliance provided with extremely efficient and safe locking means.

Problems solved by technology

In particular, due to their design itself, the bowl and lid ramps have a resistance to deformation, and in particular to bending, which is far from being optimum.

The conventional bayonet locking systems implemented in the known pressure cookers are hence based on the use of lid and bowl ramps of great lengths, which provides the pressure cooker with a not very valuable aesthetical character, due in particular to the relatively unstructured aspect of the bowl edge, in which are formed notches (allowing the engagement of the lid ramps) that extend over at least half the perimeter of the bowl edge.

The bayonet locking systems implemented in the known pressure cookers hence necessarily induce very specific conformations and sizes of the bowl and lid edges, which limit in particular the possibility of accessorization of the concerned pressure cookers, and affect significantly the general aspect thereof.

The great angular stroke may further be difficult to follow due to the frictions between the bowl and lid ramps (as well as the sealing gasket) that it implies.

Finally, the known bayonet pressure-cooker locking systems are absolutely not optimized as regards in particular their mechanical behaviour (mechanical resistance and resistance to deformation), their weight, their aesthetics, their ergonomics, and their easiness of use.

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